Sectional work-support for leather-working machines.



F. J. PERKINS. l SEGTIONAL WORK SUPPORT FOR LEATHER WORKING MAGHINBS.

APPLIOATION FILED MAR, 26. 1'910. 986,497.

UNiTED 4s rAvrns rnANxmN J. PERKINS, or woBUnN, MASSACHUSETTS, ASSIGNOR To HOLDER-PERKINS comPANY, or woBURN, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS-,- f

SEcTroNAL WonmsUrr'oRT ronLEATHEn-WORKING maximus,

Specification o( essaim meinem. rammed Mar. 14,1911.'A

Application filed March G, 1910. Serial No. 551,753.

working 1nachines.=`r

The invention has' for its object to pro-4 vide. a Sectional work-support, referably:v

in the forin of a rollin which the individual sections or members maybe made of metal'- or other rigid materialand be capable of movement in one direction-in responseto external pressure andof being moved in the opposite direction' by means within Said. ,members whereby an effective, durable, and, inexpensive work-support is obtained,- which is particularly serviceableas a bed roll.

The particular features of the invention will be pointed out in the claims at the end of this specification.l

Figure 1 is an end elevation of one form of sectional roll embodying thisinventiom. Fig. 2, a-longitudinal section taken on the line 2-2, Fig. .1. Fig. 3, a cross section on the line 3-3, Fig. Si, and l? ig. 4, a detail 35 to be referred to.

In the prescnt'instance, I have illustrated one construction of .sectional work-Support embodying this invention, which I mayprefer, and which comprises aseric's of circular sections ormembers a, arranged side by Side on a supporting bar Z) between end disks or headers c, cl. Euch member a is provided with a circular exterior surface and with an interior slot or opening 12, which is prefcurved end walls 15, 16. The elongated slot or opening 12 has extended through it the supporting and guiding bar Il, whose'height is equal to the width of the elongated slot. 12 and whosewidth is less than the length of the said elongated slot as shown in Fig. 3, whereby a space is lett between -one end of the slot, l2 and the adjacent face of the guide bar Z,- So as to enable the members a erabiy ciongated 'and provided with subi stantially parallel-sides 13, 14, and with? to move transversely ot the guiding bar inv of the sectionsor members as represented I pipe or tube 20,1.wh1chf'may-,be connected v with a suitable supply-.of air 1 n 1de r pres sure in a mannermelllmownend substantial ly as in United States =Patent1.No. 854,419 granted May-,21, 1907 ito'lilenryijec Holder'.

In the present instance, A the pneumatictnbe of Substantial thickness andof, rubbericand fabricar thick rubber,.anday flexiblefinner y30 tube 22, which-maybe-reinforcedatvfitsendsg by-washers 23 of rubber-or other nonrne tallicrnaterial. From the above description,.it will be Seen that theiinner tube 22 maybc infiated with air or other iuid undera predeter# mined pressure, whiehserves. tov mover or slide the individual 'sectionsbr members@` en the Supporting bar 16A- and bring their out'encircumferences into aline ent to ,form 90 'a workin surface upon whic 1.the l1ide,v skin,.leat er or other worlenxayfbe sup ported while undergoing treatment as 'for l lnstance', with .a revolving bladedfroll- (not, shown) `but such asnow commonly .nscdin S leather 'working machines, .v'lhc yieldingmedium interposed between the bar b. andv the :front end' wall 1G of the slot 12 in each section, permitsthe latter to be, slid back` transversely on vthel supporting bar b to compensate for uneven thickness in thework interposed between the sections or members and the operating tool. The roll as thus vlar described, may b e used as a work-support, but. I 'may prefer 105 to provide each Section with a ring 25 loosely mounted thereon to be capable of rotary movement on the said member or section. and to facilitate this rotary movement, said'- ring may be provided on its inner circum-\ 1 1 is composed oi an outer tubeor cylinder- 2 1 v cxtendedx'thiough said slots between one 'end wulltlieieof and said bar and containopenings in the same through which the ends of thesupporting bar-Z) are extended, which bur isialso' fastened to the end disks and the buse or support. 33 by bolts 36.

Clziims. A l. A work-support of tlic character described, comprising :i plurality of circular sections or members, provided within their circumference with elongated slots, a supporting bar extended through said slots und upon which said r members ure capuble ofsliding transversely thereof, :ind-u iiexible tubeextended through said .slots between one end wall thereof und said bar :ind con-1 taining fluid pressure, substantially as de# scribed.

2. A woili-siippoi't of the cliiiructer described,'con'iprisiiig u plurality" of circular sections or members, provided within their upon' which Isid members are capable of sliding transversely thereof, u` flexiblel tube ing Huidprcssure, and rings loosely mounted on the exterior of seid sections or inembers iind rotatable thereon, substantitilly as described. p A work support of tbe-churacter scribed, comprising a plurality of sections crcumfcrence. with elongated slots, :isup porting bur extended throughl sind slots andv `or members, each havingfanopening, a. support extended through the openings of said members and having guiding surfaces in slidingengagement with the said members to permit free movement in one direction 45- and to restrain the members from moving in 'a direction substantially atright 'anges thereto, und yieldin imeans:located in the.- path of movement ot said' membersbetween the guiding'surfaces'of the support and an 50' end wall of opening, substantially es"r described.

4. A work-support of the characterh de?` "scribed, comprising a* plurality of 'sections an opening, a' sup- 55 or members, each havin port-extended throught ie openings of said n'ieiubers und upon which the' latter are eti- 'pablo of movement transversely thereof,:and :i pneumatic tube extended-through thev openings of said members between said 'sup-1 60 i port und an end wall 'of 'said openingssub-'fl 'stuntislly 'as described 5. A Work-support of the, character de-'L =scribed,1comprising a pluriility A of circularfv sections'fprovided with openings in oline? 65 ment, a supportextended through said -open ings und upon which said sections-are citp able of bodily movementA transversely thereof, yielding means interposed bet-Ween;

sind supportand said sectioiis,'andlrings70 f loosely mounted von the exterior of said sections ond bodily movble thereon in a circu-A lur path, substantially-iis described.

In testimony whereof, Ihnve'sigiied my two subscribing Witnesses. v

Witnesses J'As. H. CHURCHILL J. Muerny, v

EIANKLIN J. PERKINS.

name to this specification in the presence of `75v 

